Plow



y 0- J. BLUE, JR 2,201,846

PLOW

Filed'Jan. 11, 1939 Zinventor:

'IIlI/z I 5 JOHN BLUE J R g: 4 BY ga 1R (Ittorneg Patented May 21, 1940UNITED STATES PATENT OFFICE 4 Claims.

This invention relates to a plow having novel means for adjusting theplow standard relative to the beam and holding it in such adjustment. Itis a well known fact that variousplows require various adjustments as tothe plow standard,

the adjustment or pitch that the standard occupies, depending upon thesoil which is being cultivated. By having an adjustable plow standard,it is possible to vary the depth that the plow point passes into theearth, which in turn will increase or decrease the power necessary todraw the plow along. It is very essential that this adjustment be finelygraduated and it is equally important that the adjusting member be suchthat when a proper adjustment has been made that the same will remain inthis position.

It is, therefore, an object of this invention to provide means foradjusting a plow standard relative to the beam which will enable one tofix the standard at any desired angle. The particular adjustment shownin the drawing has a specially designed eccentric lock that makes theadjustment positive and very speedy. The plow hoe or sweep upon the footof the standard is easily and quickly adjusted to the correct angle forplowing by merely lifting a handle, which disengages a clamp associatedwith the upper portion of the standard and which encircles the plowbeam. This eccentric lock enables one to quickly make a most minuteadjustment and eliminates the necessity of using bothersome set screwsand levers found in conventional stocks.

It is another object of this invention to provide a special type of flatrunner or landslide for a plow of this type, said landslide beingdisposed on the lower end of the plow and being adapted to fit in thebottom of a furrow. The landslide is secured to the plow by a bolt, thehead of which is disposed in a counter-sunk bore in the bottom of theslide. The depth of this bore is much greater than the depth of the bolthead. By providing a suitable counter-sunk bore, in the lower portion ofthe runner, it is possible to place the head of the bolt at asubstantial distance from the wearing surface, thereby allowing therunner to be almost worn out before the head of the bolt is contacted.This insures that the head of the bolt will not 5 be worn away to thusallow the landslide to become detached from the plow.

Some of the objects of the invention having been stated, other objectswill appear as the description proceeds when taken in connection withthe accompanying drawing, in which Figure 1 is a perspective View of aplow embodying my invention;

Figure 2 is an enlarged elevation of the central portion of Figure 1showing the improved clamp and adjusting means for the plow standard;

Figure 3 is a sctional view taken along the line 3-3 in Figure 2;

Figure 4 is a sectional plan view taken along the line 44 in Figure 1;

Figure 5 is a sectional view taken along the lines 55 in Figures 1 and4;

Figure 6 is an isometric View looking at the top side of my improvedlandslide.

Referring more specifically to the drawing, the numeral l0 denotes aplow beam having a hook H which is used to draw the plow from place toplace. The left-hand end of beam I0 is curved downwardly and has securedto its lower end, as at M, suitable horizontal strap iron members l5,there being a strap iron member disposed on each side of the beam. Thesestrap iron members occupy side by side relation to each other andjointly form an attaching member to which a landslide I6 is secured. Atthe point where the landslide is secured to the members 15, it will benoted that these members are spread apart from each other, forming aslot ll therebetween, and this slot is penetrated by a bolt 18.landslide l6 has upwardly extending flanges lBa integral therewith forthe purpose of reinforcing the same at the point where the boltpenetrates this member.

By referring to Figures 5 and 6, it is seen that a slot 19 is providedin the landslide I6. This slot is countersunk on the bottom side and thehead I80. of the bolt I8 is adapted to fit therein. This slot is soconstructed that the head of the bolt will be disposed at a considerabledistance from the wearing surface 2| of thelandslide. Therefore, byproviding a landslide of this type practically all of the same can beworn away before the head [8a of the bolt l8 will be contacted.Heretofore, it has been common practice to provide a counter-sunk holeor slot of such a depth that the head of the bolt would be substantiallyeven with the wearing surface of the bottom side of the landslide,resulting in the head of the bolt wearing from the beginning along withthe landslide. When the old type of landslide is used, the head of thebolt will be almost completely worn out before the slide or runner hasbeen worn a corresponding amount.

The front ends of the attaching members i 5 are secured to the lower endof standard members 22 as at 23. This standard comprises a pair ofspaced bars which extend upwardly and have their upper ends disposed onopposed sides of beam I0. Disposed between the bars 22 and directlybeneath the beam H], is a block 25. This block has an upper convexsurface which fits into the concave surface on the lower side of thebeam ID. The block 25 is held between members 22 by any suitable meanssuch as a bolt 26 and this bolt has The 25 a spacer sleeve 2!therearound. The upper side of the beam H! is convex and has the lowerconcave surface of a block 28 fitting thereagainst. This block has anotch in the upper side thereof which notch is engaged by the peripheryof an eccentric head portion 3!, said eccentric portion being integralwith handle 32 weighted at its free end. The handle and the eccentricportion are pivoted as at 33 between the members 22. When it is desiredto release the clamping pressure between the block 28 and the upper sideof the beam Iii, it is only necessary to rotate the handle 32 to adotted line position. Due to the eccentricity of the portion 3! relativeto the bolt 33, the clamping pressure will be relieved at this time.When the lever or handle 32 is in dotted line position the standardmembers 22 may be rotated either in a clockwise or counter-clockwisedirection relative to the pivot point 23. This rotation will of coursevary the angularity of plow point 35 which is disposed on the lowerportion of the standard. It will also vary at the same time the pitch ofthe point relative to the ground which is being plowed.

This type of clamp makes it possible to get an adjustment which is veryfine and which is very positive. In the conventional mechanisms of thistype, it has not been possible to use a simple attachment and get fineadjustments due to the fact that notches were used for holding the plowstandard in the position after it was once adjusted. These notches couldnot be spaced closely enough together. By using my improved clamp typeof adjustment, an incremental movement can be made and consequentlyincremental adjustment will result.

The plow beam H] has suitable handles 3'! secured thereto as at 38.These handles have their intermediate portions supported by a brace 38which brace has its upper end secured to the handles as at 49 and itslower end secured to the rear portion of the beam as at H.

In the drawing and specification, there has een set forth a preferredembodiment of the invention, and although specific terms are employedthey are used in a generic and descriptive sense only and not forpurposes of limitation, the scope of the invention being set forth inthe appended claims.

I claim:

1. A plow having a beam provided with an arcuate rear portion, ahorizontally disposed member having its rear end secured to the rear endof the beam, a plow standard having its lower end pivotally secured tothe forward end of the member, the upper end of the plow standard beingforked and having the beam disposed in said fork, a convex memberloosely secured in said fork and having its convex surface in engagementwith the concave edge of the plow beam, the fork also having disposedtherein a second member provided. with a concave surface in engagementwith the convex upper edge of the plow beam, the upper edge of thesecond member having a notch in its upper edge, a lever having aneccentric portion disposed in said notch, means pivotally and eccentrially mounting the eccentric end of the lever between the upper ends ofthe forked member, whereby rotation of the lever on its pivot in onedirection will press the second member into intimate contact with theupper edge of the plow beam to adjust the position of the upper end ofthe standard with relation to the plow beam.

2. A plow having a beam provided with an arcuate rear portion, ahorizontally disposed member having its rear end secured to the rear endof the beam, a plow standard having its lower end pivotally secured tothe forward end of the member, the upper end of the plow standard havingits lower end pivotally secured to the forward end of the member, theupper end of the plow standard being forked and having the beam disposedin said fork, a second member loosely secured in said fork and having aconvex surface in engagement with the concave edge of the plow beam, thefork also having disposed therein a third member provided with a concavesurface in engagement with the convex upper edge of the plow beam, theupper edge of the third member having a notch in its upper edge, a leverhaving an eccentric portion disposed means pivotally and eccentricallymounting the eccentric end of the lever between the upper ends of theforked member, whereby rotation of the lever on its pivot in onedirection will press the third member into intimate contact with theupper edge of the plow beam to adjust the position of the upper end ofthe standard with relation to the plow beam, said first member having alandslide secured to the lower surface thereof, said securing meanscomprising a bolt penetrating the first member, said landslide having anelongated slot therein the walls of which taper inwardly and upwardlytowards each other to the upper surface of the landslide, the head ofthe bolt being disposed in said slot and having the lower end of thehead portion disposed a substantial distance from the lower surface ofthe landslide,

3. A plow having a beam, a standard and a slide, the slide having itsrear end secured to the rear end of the beam, the standard having itslower end pivotally secured to the forward end of the slide, the rearportion of the beam being curved on an arc of a circle whose center isthe pivot point between the standard and the slide, the standardcomprising a pair of members projecting alongside and beyond the upperedge of the beam, a bolt penetrating said members a short distance belowthe beam, a wedge member having a notch in its lower side in which saidbolt is disposed and having a convex upper surface fitting against thelower edge of the beam, a second bolt penetrating said members asubstantial distance above the upper edge of the beam, a second wedgemember having a concave lower surface resting on the upper edge of thebeam and having a notch in its upper edge, a lever having an eccentricportion pivotally mounted on said second bolt and disposed in the notchin the upper edge of the second wedge member, whereby, when the lever isswung on its pivot in one direction the wedge members will grip theupper and lower edges of the beam and hold the upper end of the standardin adjusted position.

4. A landslide for plows having an elongated slo-t therein for receivingan attaching bolt, the slot having sidewalls which converge upwardly toprovide a restricted slot at the upper side of the landslide to therebyconfine the head of an attaching bolt at a substantial distance from thelower surface of the landslide.

JOHN BLUE, JR.

in said notch,

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